Enabling Decentralized and Dynamic Data Integrity Verification for Secure Cloud Storage via T-Merkle Hash Tree Based Blockchain

Table 5

Comparison of verification efficiency.

Scheme	Communication cost		Computation cost
	CS	BC	CS	BC	Verifier
Yue et al. scheme [9]					—
Wang and Zhang scheme [27]
Our scheme

is the total number of blocks in the data file; is the branch number of tree; is the number of challenged blocks; denotes one addition in ; denotes one multiplication in ; denotes one pairing operation; and denotes one hashing operation.